New York City's health commissioner, Ashwin Vasan, claimed that half of the illegal immigrants entering the city are not vaccinated against poliovirus.
2021 filings reveal Pfizer had reason to believe its COVID-19 vaccine's effectiveness waned, although the company did not choose to release the information until months after the revelation.
"[T]he fact that the studies that do exist (including our own late addition) fail to show convincing evidence of benefit from masking suggests that, if there is a benefit, it is a rather modest one, i.e. masks may reduce the risk slightly but do not guarantee you won’t get infected," said Dr. Breathnach.